LNG用高锰奥氏体低温钢维氏硬度与强度关联性研究  

Relationship between Vickers Hardness and Strength of High Manganese Austenitic Cryogenic Steel for LNG

作　　者：朱海 王红鸿[1] 王杨文 张书畅 杜卓同 查小琴 ZHU Hai;WANG Honghong;WANG Yangwen;ZHANG Shuchang;DU Zhuotong;ZHA Xiaoqin(Materials Science Department of Wuhan University of Science and Technology,Wuhan 430081,China;Luoyang Ship Material Research Institute,Luoyang 471023,China)

机构地区：[1]武汉科技大学材料学部,湖北武汉430081 [2]中国船舶集团有限公司第七二五研究所,河南洛阳471023

出　　处：《材料开发与应用》2024年第5期63-69,共7页Development and Application of Materials

基　　金：湖北省重点研发计划项目(2021BID003)。

摘　　要：为实现用高锰奥氏体低温钢的维氏硬度估算其强度,本研究分别对4种成分的高锰奥氏体低温钢在热轧、焊接热模拟、热处理、冷形变等不同状态下进行维氏硬度测试和室温拉伸试验,并通过回归分析的方法得到了维氏硬度与抗拉强度、屈服强度的回归关系式。结果表明:高锰奥氏体低温钢维氏硬度与抗拉强度和屈服强度之间均存在强正相关性,且均为线性关系,并得到了相应的回归方程和相关系数。本研究建立的线性回归方程可由维氏硬度直接预测高锰奥氏体低温钢的抗拉强度和屈服强度,且拟合效果好、拟合精度高。To estimate the strength of high manganese austenitic cryogenic steel through Vickers hardness,Vickers hardness tests and room temperature tensile tests are conducted on high manganese austenitic cryogenic steels with four different compositions in different stages including hot rolling,welding thermal simulation,heat treatment,and cold deformation.Regression analysis is used to obtain the regression relationship between Vickers hardness and ultimate tensile and yield strengths.It is concluded that strong linear positive correlation exists between Vickers hardness and ultimate tensile and yield strengths,and the regression equations and correlation coefficients are obtained.The established linear regression equation could be used to directly predict the ultimate tensile strength and yield strength of this type of high manganese austenitic cryogenic steel through Vickers hardness,and the fitting result has high accuracy.

关 键 词：高锰奥氏体低温钢 维氏硬度 强度 回归分析 

分 类 号：TG115.5[金属学及工艺—物理冶金]